CN1643448A - Projection type image display unit - Google Patents
Projection type image display unit Download PDFInfo
- Publication number
- CN1643448A CN1643448A CNA038067846A CN03806784A CN1643448A CN 1643448 A CN1643448 A CN 1643448A CN A038067846 A CNA038067846 A CN A038067846A CN 03806784 A CN03806784 A CN 03806784A CN 1643448 A CN1643448 A CN 1643448A
- Authority
- CN
- China
- Prior art keywords
- image display
- display unit
- type image
- electrode
- projection type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/22—Soundproof bodies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/3144—Cooling systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
Abstract
An ion wind generator (20) is arranged on one side of a light source (1). The ion wind generator (20) produces an air current by negatively ionizing air by corona discharges at a needle electrode (21), or negative side, and drawing the negatively-ionized air at a cylindrical electrode (22), or positive side. The air current blows toward the light source (1) and removes heat generated by the light source (1). An ultraviolet ray from the light source (1) is introduced to a vent of the ion wind generator (20) by a first dichroic mirror (4) and a ultraviolet ray reflection mirror (17). Though air exhausted from the vent includes ozone (o3) produced by corona discharges, the ozone is decomposed by the ultraviolet ray.
Description
Technical field
The present invention relates to a kind of projection type image display unit such as liquid crystal projection apparatus.
Background technology
Projection type image display unit is to constitute like this, is promptly modulated by the light valve such as liquid crystal display from the light of light emitted, so that carry out projection, therefore this display must comprise the light source of high brightness.Like this, just need take measures preventing in liquid crystal display or various types of optics, the heat that higher source luminance itself produces, and produce heat when preventing in the light polarization plate absorbing light.
In the structure of traditional projection type image display unit, the fan that has motor by rotation sucks and discharges air, and discharges heat (referring to JP-A-2001-222065) in the slave unit.
But, in utilizing motor-driven suction and discharging mechanism, because the sound of neighing that sound that motor rotates and fan send and can produce suction and discharge sound has produced noise thus.Therefore, its defective is, when using projector, because suction and discharge noise that sound produces and not melodized.
Summary of the invention
At above-mentioned situation, the purpose of this invention is to provide projection type image display unit, the noise when it can reduce air suction and discharge is until the voiceless sound state.
For addressing the above problem, utilize light valve that the light from light emitted is modulated according to projection type image display unit of the present invention, so that modulated light is carried out projection, it is characterized in that, be provided with fan blower, electrode pair air and airborne molecule that this fan blower is located at a side by utilization carry out ionization, also utilize the electrode of being located at opposite side to discharge the ion that produces by ionization, and produce air-flow.
Also have, this projection type image display unit utilizes light valve that the light from light emitted is modulated, so that modulated light is carried out projection, it is characterized in that, be provided with fan blower, the electrode that this fan blower is positioned at a side by utilization carries out the halation discharge and air is carried out ionization, and utilizes the electrode that is positioned at opposite side to extract Ionized air, and produces air-flow.
In said structure, Ionized air etc. produces air-flow to this fan blower by move chargedly.Therefore, with to produce the fan blower of wind different by rotating fan, this fan blower noise that do not rotate, and reduced and suck and the noise when discharging air, until the voiceless sound state.
This projection type image display unit can be configured to, and is decomposed by spectrum formula ground from the ultraviolet ray of light emitted, to be provided to the wind that is produced by fan blower.In this structure, even if, also can utilize ultraviolet light degradation ozone from light emitted owing to discharge has produced ozone.Further, this structure can effectively utilize unwanted ultraviolet ray in the video display.
Might adopt such structure, promptly be positioned at parallel or approximate the be arrangeding in parallel of a plurality of electrodes of a side, and be positioned at opposite side and with parallel or approximate the be arrangeding in parallel of the corresponding a plurality of electrodes of the described electrode that is positioned at a side.The wind-force that such structure can make fan blower produce has higher energy.Alternatively, be provided be positioned at a side a plurality of electrodes as electrode, and be provided be positioned at opposite side, as the mesh electrode of electrode.In this structure, be easy to realize reducing cost weight reduction.
The electrode of one side is included in the sheet metal that has a plurality of pointed portion on the edge.Compare the easier assembling of this structure with the structure that a plurality of needle electrodes are set.Also have, in this structure, the electrode of a side is included in the sheet metal that has a plurality of pointed portion on the edge, and mesh electrode is arranged on the opposite side as electrode.Further, a plurality of sheet metals with a plurality of pointed portion keep the interval be scheduled to each other.Being positioned at electrode on the side, that have a plurality of pointed portion makes by etching metal plate.Adopt etch process, can form the pointed portion of suitable shape.
In the catoptron of light source, be provided with breach, be provided with the air supply opening of fan blower in the position of breach.Also have, described fan blower is arranged near the described light source, thereby the heat that produces from light source is discharged into the outside from image display.Fan blower is arranged to almost occupy the whole surface of described image display shell one side.
Description of drawings
Sketch shown in Figure 1 is represented described according to an embodiment of the invention projection type image display unit.
Exemplary synoptic diagram shown in Figure 2 is represented the structure of ion wind generator.
Exemplary synoptic diagram shown in Figure 3 is represented the another kind of structure of ion wind generator and layout thereof.
The perspective representation ion wind generator shown in Figure 4 and the different structure of layout thereof.
The another kind of different structure of perspective representation ion wind generator shown in Figure 5.
The perspective representation ion wind generator shown in Figure 6 and the another kind of different structure of layout thereof.
The another kind of different structure (electrode structure) of perspective representation ion wind generator shown in Figure 7.
Embodiment
Below with reference to Fig. 1 to 7 explanation projection type image display unit of the present invention.
Sketch shown in Figure 1 is represented the optical system of three screen color liquid crystal projector.Illuminator 2 in the light source 1 comprises: ultraviolet high-pressure sodium lamp, metal halid lamp, xenon lamp etc., and launched after becoming directional light by for example para-curve reflectometer 3 from the light that illuminator sends.
The first dichromatism mirror 4 is provided with the angles of inclination that become 45 degree with the light transmit direction of light source 1, thus on crisscross uv reflectance, and the composition of non-ultraviolet wavelength is passed.
The second dichromatism mirror 5 passes the light of red light wavelength zone, simultaneously the light in reflect cyan light (green light and blue light) the wavelength zone.
The light that has passed the red light wavelength zone of the second dichromatism mirror 5 is reflected by mirror body 6, thereby its light path is changed.Be used to make ruddiness 31 to pass the transmission-type liquid crystal light valve of condenser 7 and it is carried out optical modulation by making to be passed by the ruddiness of mirror body 6 reflections.On the other hand, be introduced into the 3rd dichromatism mirror 8 by the light of the cyan wavelength zone of the second dichromatism mirror, 5 reflections.
Light in the 3rd dichromatism mirror 8 transmission blue wavelength zones, and the light in the reflection green wavelength zone.Be introduced into by the light in the green wavelength zone of the 3rd dichromatism mirror reflection and be used to make green glow 32 to pass the transmission-type liquid crystal light valve of condenser 9, and it has been carried out optical modulation by making it pass liquid crystal light valve 32.The light that has passed the blue wavelength zone of the 3rd dichromatism mirror 8 is introduced into and is used to make blue light 33 to pass mirror body 11 and 13, postpones mirror 10 and 12 and the transmission-type liquid crystal light valve of condenser 14, afterwards, carries out optical modulation by making this light pass liquid crystal light valve 33.
Screen and emitting side polarization plates that each liquid crystal light valve 31,32 and 33 all comprises incident lateral deviation vibration plate, constitutes by the liquid crystal between a pair of glass plate of sealing (be formed with on it pixel electrode and align film).By passing liquid crystal light valve 31,32 and 33 and the modulated light (the video light of each color kind) modulated is respectively mixed by two prisms 15 again, become color video light.This color video light is amplified and projection by convex lens 16, and is presented on the (not shown) of fluorescent screen.
Sidepiece at light source 1 is provided with ion wind generator 20.As shown in Figure 2, carry out the halation discharge by the needle electrode 21 that uses negative side, 20 pairs of air of ion wind generator carry out ionization, and this ion wind generator also utilizes the cylindrical electrode 22 of side of the positive electrode that Ionized air is discharged, with the generation air draught.The voltage that provides from power supply 24 is provided for high-pressure generating circuit 23, producing from several kilowatts to tens kilowatts the high pressure in the scope, and this high pressure is provided to motor 21 and 22.
As shown in Figure 1, because the air supply opening of ion wind generator 20 is faced light source 1, light source 1 is exposed under the air-flow that is produced by ion wind generator.So air-flow is removed heat from light source 1.Position shining from the ultraviolet ray of the first dichromatism mirror, 4 reflections is provided with ultraviolet rays collection mirror 18 and ultraviolet reflection mirror 17.Optically focused is carried out in the ultraviolet ray that produces in the light source 1, it is caused near the air supply opening of ion wind generator 20 to utilize ultraviolet rays collection mirror 18 and ultraviolet reflection mirror 17.Although the air that provides from the air supply opening of ion wind generator 20 comprises the ozone (O by the halation discharge generation
3), these ozone are by the ultraviolet light degradation that produces in the light source 1.In video-projection, do not need ultraviolet ray.More properly, wish in illumination light, to eliminate ultraviolet ray.In the present embodiment, not only eliminated ultraviolet ray, and effectively utilized ultraviolet light degradation the airborne ozone that provides from ion wind generator is provided.In said structure, the air supply opening of ion wind generator 20 is arranged to towards light source 1, cooling air is blown to light source 1.On the contrary, needle electrode 21 is arranged near the light source 1, and column type electrode 22 is arranged on the position away from light source 1, thereby utilizes ion wind generator 20 to extract the heat that is produced by light source 1.
Fig. 3 represents structure and the configuration thereof of ion wind generator 20A.This ion wind mode 20A is configured to parallel or approximate the be arrangeding in parallel of its multiple-pin type electrode 21A, and with also parallel or approximate the be arrangeding in parallel of the corresponding a plurality of electrode 22A of needle electrode.That is to say that ion wind generator 20A is equivalent to the assembly of the parallel or approximate a plurality of ion wind generators 20 that be arranged in parallel, it means that some electrode 22A constitute barrel portion adjacent one another are.So, the parallel assembling of polyion air generator and the setting of this structure, wind-force (air quantity) obtains increasing.The direction of the wind that is produced by ion wind generator 20A is opposite with light source 1, that is to say that the air supply opening of ion wind generator 20A is towards the exhaust outlet 19 of projector housing.When the air communication that is produced by ion wind generator 20A is crossed exhaust outlet 19 and discharged, be extracted and discharge with air-flow from exhaust outlet 19 because the heat of light source 1 generation is heated to form the surrounding air of high temperature.Because ultraviolet ray is introduced into the position of exhaust outlet inside, reduced the ozone amount of discharging from projector.Further, can consider to be provided with the discharge cylinder of guiding exhaust outlet 19, and by the ultraviolet (uv) transmission glass part ion wind generator 20A is set in this cylinder of making.Like this, by being provided, ultraviolet ray in the ozone decomposition, can improve discharge efficiency.
In the structure that Fig. 4 represents, ion wind generator 20B is connected to the catoptron of light source 1.Transparent cover 1a is arranged on light exit side, with under the situation of illuminator 2 explosions of light source 1, prevents that glass fragment from all blowing on this position.For the air themperature that suppresses light source inside rises, along with the closure of transparent cover 1a, form breach 3a and 3a, to discharge high temperature air in the both sides of catoptron 3.Ion wind generator 20B comprises needle electrode 21b and column type electrode 22B.Column type electrode 22B forms with the shape of breach 3a corresponding roughly half-cylindrical.Ion wind generator 20B only is connected to one of them breach of two breach 3a, and another breach 3a is as exhaust outlet.The ozone that produces owing to the halation discharge among the ion wind generator 20B is exposed in catoptron 3 under the direct projection ultraviolet ray that comes from light source 1.That is to say that the first dichromatism mirror 4 and ultraviolet reflection mirror 17 must not adopt this structure.Wishing has mesh members to be connected to breach 3a, so that under the situation that illuminator 2 exposes, prevent that glass fragment from all blowing to the position of breach.
Fig. 5 represents the structure of ion wind generator 20C.This ion wind generator 20C comprises needle electrode 21C and mesh electrode 22C.Compare easier reducing cost, and the lightweight construction of use mesh electrode 22C with the structure that polycylindser formula electrode is set.
Perspective representation shown in Figure 6 is provided with the inner structure of the projection type image display unit 40 of ion wind generator 20D.This projection type image display unit 40 comprises white light source 41, auxiliary blower 42, power supply 43, color wheel 44, video generating optics system 45, convex systems 46 and signal processing circuit 47.Ion wind generator 20D is arranged to occupy the almost whole surface of comparison near that side of the shell of white light source 41.Ion wind generator 20D is provided with as a plurality of needle electrodes of the electrode on a side and for example described mesh electrode of the electrode of conduct on opposite side.Adopt this mode, be arranged to almost to occupy in the structure on whole surface of shell one side, increased wind-force (air quantity) at many needle electrode 21D.The direction opposite with the position that white light source 41 is set (from the outside direction of projector) of the wind that produces by ion wind generator 20D.When the air-flow that produces by ion wind generator 20D when shell discharges, the surrounding air that is heated to high temperature by white light source 41 is extracted, to be discharged to housing exterior with air-flow.Further, because being provided with ozone, ion wind generator 20D removes filtrator 23D, owing to the ozone (O that discharges and produce
3) be decomposed, and when air is discharged, be eliminated.By auxiliaryly the catalyzer of for example manganese oxide and so on being applied to the supporter of honeycomb, can constituting ozone and remove filtrator 23D.
In said structure, be provided with a plurality of electrode 21D.In other structure, as shown in Figure 7, be provided with some battery lead plate 21E that the side at the edge has a plurality of pointed portion respectively.Each pointed portion of battery lead plate 21E is as a needle electrode.In this structure, and comparing of many needle electrodes is set, its structure is simpler, and assembling process is easier.Can make battery lead plate 21E by extruding (crush-cutting) sheet metal, but in the present embodiment, make battery lead plate by etch process.Etch process has following advantage, the pointed portion of promptly easier formation suitable shape (be suitable for reducing discharging sound, and improve air feed efficient, or the like).
Although in said structure, ion wind generator is arranged near the light source 1, and the present invention is not limited thereto.Ion wind generator also can be arranged on other position, and promptly air is heated to the position (position of close LCDs or the like) of high temperature.Also have, lateral electrode in the ion wind generator and the positive and negative relation between the opposite side electrode can be put upside down.Can use its structure to be different from the ion wind generator of other type of above-mentioned concrete structure, produce air-flow as long as ion wind generator constitutes by air or airborne molecule are carried out ionization.
In said structure, show the video that the uses three transmissive liquid crystal display screen system that is related, but the present invention is not limited to same video generating optics system.When using other video generating optics system, also can use the present invention.
As mentioned above, has the mechanism that produces ion wind according to fan blower of the present invention.Therefore, the fan blower produces wind is different with rotating by fan, and fan blower of the present invention is sucking and during the discharge air, the noise that do not rotate, and reduced noise, until the state that does not have sound.During will decomposing with the structure that shines the wind that is produced by fan blower from the ultraviolet spectrogram formula ground of light emitted, and in being provided with ozone removing structure of filter, its advantage be, even if produced ozone, can prevent that also ozone is discharged into outside the projector.
Claims (12)
1. projection type image display unit, be used to utilize light valve that the light from light emitted is modulated, so that modulated light is carried out projection, described projection type image display unit is characterised in that, be provided with fan blower, electrode pair air and airborne molecule that this fan blower is located at a side by utilization carry out ionization, also utilize the electrode of being located at opposite side to discharge the ion that produces by ionization, and produce air-flow.
2. projection type image display unit, be used to utilize light valve that the light from light emitted is modulated, so that modulated light is carried out projection, described projection type image display unit is characterised in that, be provided with fan blower, the electrode that this fan blower is positioned at a side by utilization carries out the halation discharge and air is carried out ionization, and utilizes the electrode that is positioned at opposite side to move Ionized air, and produces air-flow.
3. projection type image display unit as claimed in claim 1 or 2 is characterized in that, is decomposed by spectrum formula ground from the ultraviolet ray of light emitted, to be provided to the wind that is produced by fan blower.
4. as each the described projection type image display unit in the claim 1 to 3, it is characterized in that, be positioned at parallel or approximate the be arrangeding in parallel of a plurality of electrodes of a side, and be positioned at opposite side and with also parallel or approximate the be arrangeding in parallel of the corresponding a plurality of electrodes of the described electrode that is positioned at a side.
5. as each the described projection type image display unit in the claim 1 to 3, it is characterized in that, be provided with a plurality of electrodes that are positioned at a side, and be provided be positioned at opposite side, as the mesh electrode of electrode.
6. as each the described projection type image display unit in the claim 1 to 3, it is characterized in that the electrode of a side is included in the sheet metal that has a plurality of pointed portion on the edge.
7. projection type image display unit as claimed in claim 6 is characterized in that mesh electrode is arranged on the opposite side as electrode.
8. as claim 6 or 7 described projection type image display units, it is characterized in that:
Be provided with and be positioned at a plurality of electrodes on the side, that have a plurality of pointed portion, and keep predetermined interval each other.
9. as each the described projection type image display unit in the claim 6 to 8, it is characterized in that, be positioned at electrode on the side, that have a plurality of pointed portion and make by etching metal plate.
10. as each the described projection type image display unit in the claim 1 to 9, it is characterized in that:
Reflector portion at light source is arranged with breach, wherein,
Be provided with the air supply opening of fan blower in the position of breach.
11. each the described projection type image display unit as in the claim 1 to 9 is characterized in that:
Described fan blower is arranged near the described light source, thereby the heat that is produced by described light source is discharged into the outside from image display.
12. each the described projection type image display unit as in the claim 1 to 9 is characterized in that:
Described fan blower is arranged to almost to occupy the whole surface of shell one side of described image display.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP91923/2002 | 2002-03-28 | ||
| JP2002091923 | 2002-03-28 | ||
| JP361139/2002 | 2002-12-12 | ||
| JP2002361139A JP3584031B2 (en) | 2002-03-28 | 2002-12-12 | Projection type video display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1643448A true CN1643448A (en) | 2005-07-20 |
| CN100437343C CN100437343C (en) | 2008-11-26 |
Family
ID=28677562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB038067846A Expired - Fee Related CN100437343C (en) | 2002-03-28 | 2003-03-26 | Projection type image display unit |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7210790B2 (en) |
| EP (1) | EP1489458B1 (en) |
| JP (1) | JP3584031B2 (en) |
| CN (1) | CN100437343C (en) |
| DE (1) | DE60333266D1 (en) |
| WO (1) | WO2003083574A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3717885B2 (en) | 2002-12-12 | 2005-11-16 | 三洋電機株式会社 | Projection display device |
| JP4148865B2 (en) * | 2003-09-26 | 2008-09-10 | 三洋電機株式会社 | Projection display device |
| JP4003791B2 (en) | 2005-10-19 | 2007-11-07 | セイコーエプソン株式会社 | projector |
| WO2007112763A1 (en) * | 2006-04-03 | 2007-10-11 | Aureola Swedish Engineering Ab | Method and apparatus for cooling and ventilation |
| JP4662185B2 (en) * | 2008-05-15 | 2011-03-30 | カシオ計算機株式会社 | Light source device and projector |
| JP5136266B2 (en) * | 2008-07-30 | 2013-02-06 | セイコーエプソン株式会社 | Spatial light modulator, projector, and cooling method of spatial light modulator |
| WO2010070484A1 (en) * | 2008-12-15 | 2010-06-24 | Koninklijke Philips Electronics N.V. | Cooling arrangement for a luminaire |
| JP2011003380A (en) * | 2009-06-18 | 2011-01-06 | Seiko Epson Corp | Light source device and projector |
| JP2011003379A (en) * | 2009-06-18 | 2011-01-06 | Seiko Epson Corp | Light source device and projector |
| JP2011165490A (en) * | 2010-02-10 | 2011-08-25 | Seiko Epson Corp | Light source unit and projector |
| US20110094710A1 (en) * | 2009-10-23 | 2011-04-28 | Ventiva, Inc. | Redundant emitter electrodes in an ion wind fan |
| TWI447513B (en) * | 2011-08-03 | 2014-08-01 | Hon Hai Prec Ind Co Ltd | Porjector light source apparatus |
| CN103698966B (en) * | 2012-09-27 | 2016-08-17 | 中强光电股份有限公司 | Illuminator and projection arrangement |
| CN115311967B (en) * | 2022-02-17 | 2023-04-25 | 郑州航空工业管理学院 | Outdoor advertisement cabinet capable of circularly displaying advertisements |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986007500A1 (en) * | 1985-06-06 | 1986-12-18 | Astra-Vent Ab | An air transporting arrangement |
| SE458077B (en) * | 1987-07-03 | 1989-02-20 | Astra Vent Ab | DEVICE FOR TRANSPORT AND EVEN CLEANING OF AIR |
| CN2037146U (en) * | 1988-09-01 | 1989-05-10 | 电子工业部第十二研究所自动工程研究所 | Electronic fresh-keeping machine for fruits and vegetables |
| SE462739B (en) | 1988-12-08 | 1990-08-27 | Astra Vent Ab | DEVICE OF A CORONA DISCHARGE DEVICE FOR THE REMOVAL OF THE DAMAGE ADDITION CREATING HARMFUL SUBSTANCES |
| CN2052615U (en) * | 1989-05-18 | 1990-02-14 | 贺学成 | Micro-energy consumption and multi-function fruit and vegetables fresh preservation device |
| IL103867A0 (en) | 1992-11-25 | 1993-04-04 | Spectronix Ltd | Cooling method and apparatus |
| JPH08238441A (en) * | 1995-03-03 | 1996-09-17 | Kansei Corp | Air cleaning device |
| JPH10241556A (en) * | 1997-02-24 | 1998-09-11 | Furukawa Electric Co Ltd:The | Cooling device for plasma display |
| JP2000171920A (en) | 1998-12-09 | 2000-06-23 | Noritsu Koki Co Ltd | Light source device |
| JP2001222065A (en) | 2000-02-07 | 2001-08-17 | Sanyo Electric Co Ltd | Electronic apparatus having cooling fan |
| JP2001330890A (en) * | 2000-05-22 | 2001-11-30 | Matsushita Electric Ind Co Ltd | Light source device and projection type display device |
| JP2003195420A (en) * | 2001-12-27 | 2003-07-09 | Tamron Co Ltd | Cooling device for projector |
| JP3717885B2 (en) * | 2002-12-12 | 2005-11-16 | 三洋電機株式会社 | Projection display device |
| JP2005275200A (en) * | 2004-03-26 | 2005-10-06 | Sanyo Electric Co Ltd | Projection type image display device |
| TWI240143B (en) * | 2004-09-17 | 2005-09-21 | Coretronic Corp | Projector with air cleaning functionality |
-
2002
- 2002-12-12 JP JP2002361139A patent/JP3584031B2/en not_active Expired - Fee Related
-
2003
- 2003-03-26 CN CNB038067846A patent/CN100437343C/en not_active Expired - Fee Related
- 2003-03-26 US US10/509,114 patent/US7210790B2/en not_active Expired - Fee Related
- 2003-03-26 DE DE60333266T patent/DE60333266D1/en not_active Expired - Lifetime
- 2003-03-26 EP EP03745424A patent/EP1489458B1/en not_active Expired - Fee Related
- 2003-03-26 WO PCT/JP2003/003757 patent/WO2003083574A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN100437343C (en) | 2008-11-26 |
| JP3584031B2 (en) | 2004-11-04 |
| EP1489458A4 (en) | 2008-03-19 |
| JP2004004505A (en) | 2004-01-08 |
| EP1489458A1 (en) | 2004-12-22 |
| DE60333266D1 (en) | 2010-08-19 |
| EP1489458B1 (en) | 2010-07-07 |
| US7210790B2 (en) | 2007-05-01 |
| WO2003083574A1 (en) | 2003-10-09 |
| US20050237500A1 (en) | 2005-10-27 |
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